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                    Closing price on 4/28/2009
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        |           
                
                    | Open | 8.70 |  
                    | High | 8.90 |  
                    | Low | 8.60 |  
                    | Volume | 6,400 |  
                    | Split-adjusted Price | 8.90 |  
                
             | 
 |  SDD Historical Quote 
            
                | Date | Change | Open | High | Low | Close | Average | Adjusted Close | Volume |  |  			
            | 4/28/2009 | +0.20 / +2.30% | 8.70 | 8.90 | 8.60 | 8.90 | 8.70 | 8.90 | 6,400 |   |  
            | 4/27/2009 | +0.10 / +1.16% | 8.50 | 8.70 | 8.50 | 8.70 | 8.56 | 8.70 | 4,700 |   |  			
            | 4/24/2009 | -0.70 / -7.53% | 8.80 | 8.90 | 8.50 | 8.60 | 8.56 | 8.60 | 24,300 |   |  
            | 4/23/2009 | +0.10 / +1.09% | 9.30 | 9.30 | 8.80 | 9.30 | 9.07 | 9.30 | 12,000 |   |  			
            | 4/22/2009 | +0.60 / +6.98% | 8.60 | 9.20 | 8.50 | 9.20 | 9.11 | 9.20 | 20,600 |   |  
            | 4/21/2009 | -0.60 / -6.52% | 8.60 | 8.60 | 8.60 | 8.60 | 8.60 | 8.60 | 11,400 |   |  			
            | 4/20/2009 | -0.20 / -2.13% | 9.20 | 9.20 | 9.20 | 9.20 | 9.20 | 9.20 | 2,500 |   |  
            | 4/17/2009 | -0.60 / -6.00% | 10.80 | 10.80 | 9.40 | 9.40 | 9.84 | 9.40 | 40,600 |   |  			
            | 4/16/2009 | -0.10 / -0.99% | 10.20 | 10.70 | 9.90 | 10.00 | 10.13 | 10.00 | 39,000 |   |  
            | 4/15/2009 | -0.40 / -3.81% | 10.50 | 10.90 | 10.00 | 10.10 | 10.35 | 10.10 | 63,600 |   |  			
            | 4/14/2009 | +0.60 / +6.06% | 10.50 | 10.50 | 9.90 | 10.50 | 10.34 | 10.50 | 94,600 |   |  
            | 4/13/2009 | +0.60 / +6.45% | 9.90 | 9.90 | 9.50 | 9.90 | 9.89 | 9.90 | 50,000 |   |  			
            | 4/10/2009 | +0.40 / +4.49% | 9.30 | 9.30 | 9.20 | 9.30 | 9.30 | 9.30 | 51,000 |   |  
            | 4/9/2009 | +0.60 / +7.23% | 8.30 | 8.90 | 8.30 | 8.90 | 8.65 | 8.90 | 34,800 |   |  			
            | 4/8/2009 | -0.30 / -3.49% | 8.50 | 8.60 | 8.20 | 8.30 | 8.36 | 8.30 | 32,700 |   |  
            | 4/7/2009 | +0.50 / +6.17% | 8.30 | 8.60 | 8.20 | 8.60 | 8.50 | 8.60 | 80,300 |   |  			
            | 4/3/2009 | +0.50 / +6.58% | 8.00 | 8.10 | 8.00 | 8.10 | 8.06 | 8.10 | 67,800 |   |  
            | 4/2/2009 | -0.10 / -1.30% | 7.80 | 7.90 | 7.50 | 7.60 | 7.63 | 7.60 | 9,200 |   |  			
            | 4/1/2009 | +0.20 / +2.67% | 7.80 | 7.80 | 7.50 | 7.70 | 7.65 | 7.70 | 13,200 |   |  
            | 3/31/2009 | 0.00 / 0.00% | 7.40 | 7.50 | 7.30 | 7.50 | 7.39 | 7.50 | 7,200 |   |  			
            | 3/30/2009 | 0.00 / 0.00% | 7.60 | 7.60 | 7.30 | 7.50 | 7.37 | 7.50 | 4,300 |   |  
            | 3/27/2009 | -0.20 / -2.60% | 7.50 | 7.70 | 7.50 | 7.50 | 7.59 | 7.50 | 43,700 |   |  			
            | 3/26/2009 | +0.10 / +1.32% | 7.70 | 7.70 | 7.40 | 7.70 | 7.53 | 7.70 | 24,000 |   |  
            | 3/25/2009 | -0.10 / -1.30% | 7.70 | 7.70 | 7.60 | 7.60 | 7.65 | 7.60 | 13,100 |   |  			
            | 3/24/2009 | +0.60 / +8.45% | 7.70 | 7.70 | 7.50 | 7.70 | 7.69 | 7.70 | 18,400 |   |  
            | 3/23/2009 | -0.50 / -6.58% | 7.60 | 7.60 | 7.10 | 7.10 | 7.21 | 7.10 | 11,400 |   |  			
            | 3/20/2009 | -0.50 / -6.17% | 7.50 | 7.90 | 7.50 | 7.60 | 7.57 | 7.60 | 26,600 |   |  
            | 3/19/2009 | +0.30 / +3.85% | 8.10 | 8.30 | 7.60 | 8.10 | 7.93 | 8.10 | 22,700 |   |  			
            | 3/18/2009 | +0.40 / +5.41% | 7.80 | 7.80 | 7.60 | 7.80 | 7.80 | 7.80 | 94,000 |   |  
            | 3/17/2009 | +0.30 / +4.23% | 7.10 | 7.40 | 7.10 | 7.40 | 7.28 | 7.40 | 10,100 |   |  |